chromeos: Add NoteTakingHelper class.

chrome/browser/chromeos/note_taking_helper.cc

Index: chrome/browser/chromeos/note_taking_helper.cc
diff --git a/chrome/browser/chromeos/note_taking_app_utils.cc b/chrome/browser/chromeos/note_taking_helper.cc
similarity index 79%
rename from chrome/browser/chromeos/note_taking_app_utils.cc
rename to chrome/browser/chromeos/note_taking_helper.cc
index 7f12a8da4081447fc6d397c1fde54acc820fe55b..32b18a8e376a8bdf470a644ec173a3ade761b93e 100644
--- a/chrome/browser/chromeos/note_taking_app_utils.cc
+++ b/chrome/browser/chromeos/note_taking_helper.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/chromeos/note_taking_app_utils.h"
+#include "chrome/browser/chromeos/note_taking_helper.h"
 
 #include <string>
 #include <vector>
@@ -25,6 +25,9 @@ namespace app_runtime = extensions::api::app_runtime;
 namespace chromeos {
 namespace {
 
+// Pointer to singleton instance.
+NoteTakingHelper* g_helper = nullptr;
+
 // TODO(derat): Add more IDs.
 const char* const kExtensionIds[] = {
     // TODO(jdufault): Remove testing version after m54. See crbug.com/640828.
@@ -67,13 +70,32 @@ const extensions::Extension* GetApp(Profile* profile) {
 
 }  // namespace
 
-bool IsNoteTakingAppAvailable(Profile* profile) {
+// static
+void NoteTakingHelper::Initialize() {
+  DCHECK(!g_helper);
+  g_helper = new NoteTakingHelper();
+}
+
+// static
+void NoteTakingHelper::Shutdown() {
+  DCHECK(g_helper);
+  delete g_helper;
+  g_helper = nullptr;
+}
+
+// static
+NoteTakingHelper* NoteTakingHelper::Get() {
+  DCHECK(g_helper);
+  return g_helper;
+}
+
+bool NoteTakingHelper::IsAppAvailable(Profile* profile) {
   DCHECK(profile);
   return ash::IsPaletteFeatureEnabled() && GetApp(profile);
 }
 
-void LaunchNoteTakingAppForNewNote(Profile* profile,
-                                   const base::FilePath& path) {
+void NoteTakingHelper::LaunchAppForNewNote(Profile* profile,
+                                           const base::FilePath& path) {
   DCHECK(profile);
   const extensions::Extension* app = GetApp(profile);
   if (!app) {
@@ -86,4 +108,8 @@ void LaunchNoteTakingAppForNewNote(Profile* profile,
   apps::LaunchPlatformAppWithAction(profile, app, std::move(action_data), path);
 }
 
+NoteTakingHelper::NoteTakingHelper() {}
+
+NoteTakingHelper::~NoteTakingHelper() {}
+
 }  // namespace chromeos